I've never made a startup, so I'm talking as a consumer, but here's my honest opinion.

I don't want to use your service, I have no need for it. I have four other services I can use to vent, and I only use 2 of them.

Are you addressing a need that isn't provided elsewhere? What research did you do?

If I was you, I think I'd be researching until I identified something people actually need or want, and I'd re-use some of the code from this project for connectivity.

Also, I'd allow people to use more than just Facebook. Maybe I'd rather have a unique account on your service that's associated with my email, but not discoverable by absolutely everybody.